What to Do When Marvel-of-Peru (Four O'Clock Flower) Leaves Turn Yellow? A Few Tips to Easily Save It

I. Caused by Fertilizer Damage

1. Too Much Fertilizer

Sometimes, because we fertilize it too much or the concentration is too high, the newly grown leaves turn dry brown in color, and the old leaves also become dry and fall off, so at this time we must stop fertilizing, or rinse it with clean water, so as to dilute the excess fertilizer.

2. Too Little Fertilizer

Some flower growers, when raising flowers, always only remember to water but forget to fertilize, or do not repot it for a long time, which makes its roots become tangled together, so the plant cannot get sufficient nutrients, and the leaves turn yellow; at this time we must not only repot it in time, but also apply a little fertilizer frequently in normal times.

II. Caused by Watering

1. Too Much Water

When raising it, because we water it for a long time and give too much water, the tender leaves become scorched yellow and lose their luster, and the roots also become slender and yellow, so we must control the amount of water; if the yellowing is relatively serious, then we should consider repotting it.

2. Too Little Water

Sometimes, because of our carelessness, we do not water it for a long time, which makes it easy for it to dehydrate, and then the leaves become scorched yellow, so at this time we must replenish water in time, and increase the amount and frequency of watering.

III. Caused by Temperature

It generally cannot tolerate high temperatures well; in summer, when the weather is relatively hot and ventilation is poor, leaf yellowing is prone to occur, so we must give it timely ventilation and cooling. In addition, because it is also not very cold-tolerant, in winter we must control the room temperature well and must not let the temperature be too low; if it is too low, it will also make its leaves turn yellow.

IV. Caused by Light

It very much likes to enjoy light; if you do not give it sufficient light, the chlorophyll in its leaves will decrease, and thus the leaves will gradually lose their luster and become scorched yellow, so at this time we must try our best to move it to a place with more sunlight, so that the leaves can regain their luster.